The highest day temperature in July 2025 was 82°F. The lowest night temperature was 57°F. The average values for day and night temperatures during July were 69.9°F и 61.8°F respectivly.

The average sea surface temperature in July 2025 for Gdynia was 66.3°F. The maximum and minimum values were 61.0°F and 70.2°F respectively.

Most of the days in July are cloudy but you can also expect sunny or gloomy days.

Precipitation total in July for Gdynia is 2.8 in. It makes july the most rainy month of the year.

The average wind speed in July is 9.5 mph. It makes July one of the most windless months of the year for Gdynia.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Gdynia in July is 9.8 hours.